Window balancing means



Dec. 26, 1933. J HELUNGA, 5 1,940,750

WINDOW BALANCING MEANS I 4 Sheets-Sheet l Inventor By flltomey Dec. 26, 1933. J. HELLINGA. SR

WINDOW BALANCING MEANS Filed Nov. 8, 1932 4 Sheetw-Sheet 2 Invenlor 2'5 1, I! jwwzlezzh a, s,

flllomey I 4 Sheets-Sheet 3 Q Q M/ Q Q 1933- J. HELLINGA, SR

WINDOW BALANCING MEANS .Filed Nov. 8, 1952 Inventor 1 flllorney Dec. 26, 1933. J HELUNGA, 5 1,940,750

WINDOW BALANC ING MEANS I Filed NOV. 8, 1932 v 4 Sheets-Sheet 4 Z 1/5 Invenlor I H gnwm fl Home y Patented D... 26, 1933 vvINDow BALANCING MEANS. John Hellinga, Sr.,' Chicago, Ill. Application November 8, 1932. Serial No. 641,785

2 c aims. (01. 16 -201) v This invention relates to an improved window structure wherein the principal improvement and changes reside in the provision of a frame characterized by distinguishable sliding sash guide strips, and associated sliding sashes equipped'withbuilt-in rolling screens.

Briefly stated, an outstanding feature of the invention is predicated upon a sliding sash having an especially formed rail provided with a rolling screen wherein the free endof the screen is anchored on the window frame and the opposite end wound on an especially developed winding and reeling roller, rack and pinionmeans being provided for positively'rotating the roller in order that the screen will automatically span the opening as the sash is moved to open position.

Another feature of the invention is predicated upon an automatically operablespringlift device for a slidingsashwhich device is built into the sash and provided with positive locking means and a pinion for co-action' with the same rack means which serves to actuate-the screen roller pinion. f

Those structural details which serve to explicitly' distinguish the invention from similar prior art devices will become more 'readilyapparent from the following description and drawings.

In the accompanying illustrative drawings, wherein like numerals are employed to designate like parts throughoutthe same: 3

Figure 1 is a front elevational view of the frame, sash, and screen arrangement as developed in accordance with the principles of the present invention; 1

Figure 2 is a vertical section taken approximately on the plane of the line 2-2 of Figure 1.

Figures 3 and 4 are enlarged fragmentary detail sections on the lines 33 and 4-4 respec-' tively of Figure 1.. h 1 Figure 5 is a detail sectional view illustrating the screen roller and its associated accessories or parts.

Figure 6 is a detail viewoi one'of the end retaining plates.

Figure 7 is a cross section on the line '77 of Figure 5 showing only the roller.

Figure 8 is a View in section and elevation showing a fragmentary portion of the especially recessed portions of the corner of one of the improved sashes. V

Figure 9 is a horizontal section on the line 9-9 of Figure 2.

Figure 10 is a detail view of the parting strip.

Figure 11 is a section on the line 11-11 of Figure 10.

Figure 12 is a View in section and elevation Figure 14 "is a section on the line 14-14 of Figure 13. Figure 15 is a detailview'of the plate shown in Figures 12 and 13. j f Figure 16 is an enlarged illustrativedetail view on the line 16=16 of Figure 12. Attention isfirst'invited to Figures 1 toll inclusive which figures are intended to specificallyoportray the screen arrangement. In Figure "1, the window frame is generally designated by the numeral 1'7, the numeral 18 indicating the upper sliding sash and 19 the'lower sliding sash. So far as the incorporation of thescreens in these sashes is concerned, the construction is the same ineach instance, therefore a description of one sash will suffice for both.

Directing attention to Figures 3 and 4 for example-it will be observed that the especially fashioned rail 20 isformed with a longitudinal or horizontal bore 21 anda radial slot 22 for the 'screen 23. The screen is attached 'at its inner end to a roller 24confined in thebore 21. 'In this connection'I call attention to a sub-.

stantially L-shaped cornice or wear plate 25 havineits edging flange formed with a coiled in forming a'practical slide way for the screen.

Attention-is now called to Figure '5 which shows the screen roller assembly. It will be noted that trunnion pins 29 are provided at opposite ends of the roller to protrude through bearing slots 30 in the attaching and retention plates 31. These plates asshown in Figure 6 are of general rectangular form and set into the adjacent recesses '32 (see Figure 8).

Obviously the trunnions 29 rotate in the slots and have the requisite vertical play necessary to permit effective coiling of the screen on theroller without binding. At the opposite end the trunnions 29 carry fixed pinions 33.

I now call attention to Figure 9, showing the vertical stop strips '34, 35 and 36 respectively which define the guideways for the sliding sashes in a conventional manner. In accordance with the present invention however the parting strip 35 and the adjacent guide strip 36 are serrated toform rack teeth 37 and 38 with which the pinions have positive operating engagement in an evident manner (see Figure 2). ,Thus, as v the sashesare moved from closed to open position, the rack and pinion means serve to rotate the respective rollers for "unwinding the screen, and as the sashes are moved to closedposition the reverse action takes place under which circumstances the screens are again rewound on the rollers. Therefore, by permanently anchoring the free ends of the screens to proper points on the window frame, and attaching the inner ends to the rollers 24, and through the instrumentality of the rack and pinion means, effective and automatic screen operation is accomplished.

Directing attention now to Figures ;112-to.16

inclusive, I show a device which is,close1y asso-.

ciated with the screen arrangement and which functions primarily as a sash'operator. As shown in Figure 12, the sash rail 39 is formed with a mortise l0 and an edge recess 41 to accommodate :the closure operating device illustrated in Figure 13. t -The deviceshere shown comprises a bearing and attaching plate 42 'located'and fastened in therecess41,-together with a casing or cylinder A' hearing washer 4.4-is threaded into the right-hand end of the cylinder so that the washer. co-operates with the plate 42 inproviding bearings ."forthe rotaryshaft'45.

Onthe left hand end of the shaft is a rigid pinion-46 designed and located to co-operate with the rack teeth of the adjacent guide strip (not shown in .these figures). The meansifor rotating the shaft and pinion or cogwheel comprises a coiled spring .47 having one end as a"- i tached to the shaft andcthe opposite end is attached to the relatively stationary ,plate 42.

.Assumingthat the deviceislonthe lower sash, it .isevident that when the sash is lowered the spring 47 is tensioned sufficiently to automatically elevate the sash when released. ,In .order to-retain-the sash ;ina set position, abrake device is utilized, said device ebeing su'fficiently illustratedin Figure 1.6.

- The brake .device comprises a .ring .50 which embraces the shaft .and which has retaining teeth .51 to bind against the-shaft to hold-it against rotation. .The ring .is provided with a screw-threaded shank 52 tapped intoa rotary bushing 53 .rotatably mounted in ambearing plate 54 attached .to the sashirail; The bushing .is in turn rotated through the-agency'of a,finger grip 55. -By thus-turning the finger grip 55the elements 52 and 53 co-act to bind the ring 51. firmly against theshaft .45 to-hold itagainst rotation to counteract the influence of the spring 47 when the spring is under tension. Consequently the device, constitutes an automatic sash operator.

It is thought from the foregoing description that the advantages and novel features of the in- "ventionwill be readily apparent.

.It is to be understood that changes 'may be made in the construction and in the combination and arrangement of the several parts provided thatsuch changes fall within the scope of the appended claims.

11-01mm: V

1 A sliding closure operator comprising a sliding sash provided in one of its rails with a plate recess .and a casing mortise, an attaching plate located and fastened in s'aid're'cess' and provided with .a bearing aperture, a cylindrical spring casrecess-and a casing mortise, an attaching plate located'an'd fastened in saidreoess and provided with a bearing aperture, a cylindrical spring caslocated in said mortise and provided with'a bearing washer at one end thereof, a shaft mounted for rotation the washer, and bearing aperture, a pinion attached to the operating end of the shaft and adapted for co-operation with a guide strip having rack teeth, a coiled spring located in the casing and surrounding the'shaft and attached at one end to the shaft and at its opposite end to said plate, and retaining means for said shaft, said retaining means comprising a toothed ring embracing theshaft a -screwthreaded shank carriedby said ring, .a rotary bushing having a screw-threaded socket into whichsaid shank :is threaded, means for supporting .thebushing, and means for turning the bushing. T r 1 JOHN HELLINGA, en. 

